Trolley-wheel



H. M. KAUL.

TROLLEY WHEEL.

APPLlCATlON FILED lAN.12, 1921.

Patented Dec. 20, 1921.

WITNESSES INVENTOR ATTCRNEY HERMAN M. RAUL, 0F GEDABB'URG, WISCUNSIN.

TROLLEY-WHEEL.

Specification of Letters Patent.

Patented Dec. 2 0% 19211.

Application filed January 12, 1921. Serial No. 438,828.

To all whom it may concern:

Be it known that I, :HERMAN M. iii-UL, a citizen of the United States, and resident oi Cedarbure', in the count of Ozaulcee and State of lVisconsin, have invented new and useful L'nproveincnts in Trolleyl s heels, oi? which the following is a description, retercnoe beinghad to the accon'ipanving drawings, which are a part of this specification.

The invention relates to trolley Wheels,

The object of the invention is to provide a trolley Wheel of the spiral groove return type l1 which coneshaped members connect with the ends of the iral grooves to bring the Wire into a position to he returned to the running portion of the Wheel by said grooves.

The invention further consists in the sev eral features hereinafter set forth and more particularly defined by claim at the conclusion hereo't'.

In the drawings: Figure 1 is an end elevation view of a device embodying the invention; Fig. 2 is a side elevation Yievv thereof.

The trolley Wneel 3 is pivotally mounted in the harp and is rovided with a running groove 5 spiral grooves 6 for returning the trolley wire 7 to the groove 5 in case said wire jumps out of said groove and eaten sions 8,

These extensions 8 are cone-shaped with their portions of smaller diameter disposed adjacent the outer end grooves 9 in each of the spiral grooves 6 terminate and are provided with retaining flanges 10.

Under normal running operation the Wire 7 runs in the groove 5 but in the trolley jumps the Wire and strikes either one of the cones 8 then the wire is pushed down to the smaller end 01" the cone and is can ried up by the spiral groove 6 adjacent thereto onto the groove 5. it will, of course he understood that the grooves 6 only return the Wire to the groove 5.

What I claim as my invention is:

A trolley Wheel having a running groove, spiral return grooves leading to the run ning groove, each spiral groove terminating in a circular groove, and conical extensions having their smaller ends coninuinicating with said circular grooves.

In testimony whereof, I afiix my signa ture, in presence of Witnesses.

HERMAN M. Krill Witnesses CHARLES C. WIRTH, O, H. BEOKMANN, O'rro A. MUELLER. 

